Note:

This calculator determines the **Modified Quantity (m_D)** of CO₂ required for fire suppression, adjusting the base design quantity based on the **Material Conversion Factor (MCF)**. The MCF accounts for the type of material or hazard being protected, ensuring that the correct amount of CO₂ is used for effective fire suppression.

Fire suppression systems must account for the specific hazards in the protected space. Different materials require different concentrations of CO₂ to effectively suppress fires. The MCF adjusts the base design quantity to reflect these variations.

The modified quantity is calculated using the inputs:

• Base Design Quantity (m_BD): The base amount of CO₂ calculated for the hazard volume (in kilograms, kg).
• Material Conversion Factor (MCF): A factor that depends on the type of material or hazard being protected. It is typically provided in fire safety standards or guidelines (e.g., NFPA 12).

Why This Matters:

Properly calculating the modified quantity ensures:

• Compliance with fire safety standards and regulations.
• Optimal use of CO₂, reducing waste and costs.
• Ensuring fire suppression effectiveness for specific hazards.

Enter the required values and click **Calculate Modified Quantity** to see the result. This calculation aids fire safety engineers and facility managers in designing effective suppression systems.

If you need assistance calculating the Base Design Quantity for CO₂, please use the following link:

• Base Design Quantity for CO₂ Calculator